When to paint a house exterior in Romeoville, IL
When to paint in Romeoville, IL
A normal season: plan the job, do not leave it late. The painting window is July to September, with 3 good months a year. The best month is August, at about 17 painting days. Book a painter by May.
If you want the house done in July to September, call for quotes in May or earlier; a job pushed past September is likely to wait until next year. For a deck, the months with enough staining days to spare are May, Jun, Jul, Aug, Sep, Oct.
- under 1Jan
- under 1Feb
- 1Mar
- 2Apr
- 9May
- 12Jun
- 15Jul
- 17Aug
- 14Sep
- 4Oct
- 1Nov
- under 1Dec
Month by month
| Month | Painting days | Staining days | With low-temp paint | Avg low / high |
|---|---|---|---|---|
| January | under 1 | under 1 | under 1 | 21° / 33°F |
| February | under 1 | under 1 | 2 | 22° / 40°F |
| March | 1 | 1 | 4 | 32° / 50°F |
| April | 2 | 2 | 10 | 40° / 61°F |
| May | 9 | 7 | 15 | 51° / 73°F |
| June | 12 | 10 | 13 | 61° / 83°F |
| July | 15 | 9 | 15 | 65° / 84°F |
| August | 17 | 15 | 17 | 63° / 83°F |
| September | 14 | 13 | 17 | 58° / 78°F |
| October | 4 | 4 | 14 | 46° / 65°F |
| November | 1 | 1 | 5 | 33° / 51°F |
| December | under 1 | under 1 | 1 | 26° / 41°F |
Deck stain does best in August. Low-temperature paint adds about 40 days a year here.
Towns near Romeoville compared
Every one of the 6 closest places lands within three days of Romeoville's 74 a year, so the season here is the regional season. Crest Hill, Bolingbrook, Lockport, Plainfield, Lemont, Homer Glen are read from the same station as Romeoville, so their numbers match; the real difference is the distance from that station.
| Place | From Romeoville | Painting days a year | Window | Station |
|---|---|---|---|---|
| Crest Hill, IL | 4 mi south | 74 | July to September | same station |
| Bolingbrook, IL | 4 mi north | 74 | July to September | same station |
| Lockport, IL | 4 mi southeast | 74 | July to September | same station |
| Plainfield, IL | 7 mi west | 74 | July to September | same station |
| Lemont, IL | 7 mi northeast | 74 | July to September | same station |
| Homer Glen, IL | 8 mi east | 74 | July to September | same station |
How Romeoville ranks in IL
Of 225 IL places with 10,000 people or more, Romeoville (population 41,177, 38th largest) ranks 177th for painting days, 3 days below the state median of 77. The longest season in the state is Chicago, 131 days, 26 miles northeast. The shortest is Woodstock at 65. Switching to low-temperature paint here is worth 40 extra days, more than most of the summer months on their own.
Where these numbers come from
Daily records from Lewis University Airport (1.9 miles away), 2015 to 2024, NOAA Global Summary of the Day. A month is good at 12+ painting days and possible at 6+.